if(typeof Cc == "undefined") { var Cc = Components.classes; }
if(typeof Ci == "undefined") { var Ci = Components.interfaces; }
if(typeof Cu == "undefined") { var Cu = Components.utils; }

	var prefWin = {
		setButtons: function() {
			if(this.osPlatform() != "WINNT") {
				var buttonAccept = document.documentElement.getButton("accept");
				buttonAccept.hidden = false;
				buttonAccept.disabled = false;
			}
		},
		
		osPlatform: function() {
			return Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULRuntime).OS;
		}
	};